EPFL develops concept for city-river balance on the Rhône

Lausanne, February 2023

A new evaluation method helps redevelop brownfield sites along the Rhône. Criteria such as lifestyle, environment, flooding and energy transition play a role. It was developed by the architecture laboratory of the Swiss Federal Institute of Technology Lausanne (EPFL).

The redevelopment of brownfield sites along the Rhône should balance the needs and constraints of a city and its river. Based on this guideline, a group of architects from the Laboratory for Architecture and Sustainable Technologies at the EPFL has developed a corresponding handbook for those with political responsibility.

According to a press release, the group selected two locations in Switzerland, Sion VS and Geneva, and two in France, Givors and Avignon, for their study. For each district, they developed three customised and architecturally different visions. In total, the team identified more than 1400 neighbourhoods in transition along the Rhône. It sees enormous potential in this for the development of derelict areas that were abandoned by companies, for example, when they abandoned the waterways.

The study did not look at urban areas as a whole, as is usually the case. “Our approach is different because we tackle urban development and planning issues on a smaller scale and focus on individual river neighbourhoods,” lab and study leader Emmanuel Rey is quoted as saying. “Our tool provides a more detailed, entirely local picture of what the river can do and how it interacts with the city,” Rey says. “In that sense, it’s an argument against traditional, generic planning.”

This new assessment method with its 18 indicators was applied as an example to one of the case studies, the La Jonction neighbourhood in Geneva. For example, the indicator for the energy transition shows whether a particular vision is in line with the canton’s overall strategy. At the city level, it can be used to evaluate plans for shuttles, pedestrian bridges or other aspects of river transport. And at the neighbourhood level, for example, it provides information on whether river water could be used to heat or cool buildings.

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